?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Allow scrolling by page via mouse wheel
[llpp.git] / link.c
blobf4471e9af2dd64d505085e79d220a757fbf3bdbd
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <ctype.h>
24 #include <stdarg.h>
25 #include <limits.h>
26
27 #include <GL/gl.h>
28
29 #include <caml/fail.h>
30 #include <caml/alloc.h>
31 #include <caml/memory.h>
32 #include <caml/unixsupport.h>
33
34 #include <fitz.h>
35 #include <mupdf.h>
36 #include <mupdf-internal.h>
37 #include <muxps.h>
38 #include <muxps-internal.h>
39 #include <mucbz.h>
40
41 #include FT_FREETYPE_H
42
43 #define PIGGYBACK
44
45 #ifndef __USE_GNU
46 extern char **environ;
47 #endif
48
49 #define MIN(a,b) ((a) < (b) ? (a) : (b))
50 #define MAX(a,b) ((a) > (b) ? (a) : (b))
51
52 #if defined __GNUC__
53 #define NORETURN_ATTR __attribute__ ((noreturn))
54 #define UNUSED_ATTR __attribute__ ((unused))
55 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
56 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
57 #else
58 #define NORETURN_ATTR
59 #define UNUSED_ATTR
60 #define OPTIMIZE_ATTR(n)
61 #define GCC_FMT_ATTR(a, b)
62 #endif
63
64 #define FMT_s "zu"
65
66 #define FMT_ptr "p"
67 #define FMT_ptr_cast(p) (p)
68 #define FMT_ptr_cast2(p) (p)
69
70 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
71 err (int exitcode, const char *fmt, ...)
72 {
73 va_list ap;
74 int savederrno;
75
76 savederrno = errno;
77 va_start (ap, fmt);
78 vfprintf (stderr, fmt, ap);
79 va_end (ap);
80 fprintf (stderr, ": %s\n", strerror (savederrno));
81 fflush (stderr);
82 _exit (exitcode);
83 }
84
85 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
86 errx (int exitcode, const char *fmt, ...)
87 {
88 va_list ap;
89
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fputc ('\n', stderr);
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 #ifndef GL_TEXTURE_RECTANGLE_ARB
99 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
100 #endif
101
102 #ifndef GL_BGRA
103 #define GL_BGRA 0x80E1
104 #endif
105
106 #ifndef GL_UNSIGNED_INT_8_8_8_8
107 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
108 #endif
109
110 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
111 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
112 #endif
113
114 #if 0
115 #define lprintf printf
116 #else
117 #define lprintf(...)
118 #endif
119
120 #define ARSERT(cond) for (;;) { \
121 if (!(cond)) { \
122 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
123 } \
124 break; \
125 }
126
127 struct slice {
128 int h;
129 int texindex;
130 };
131
132 struct tile {
133 int x, y, w, h;
134 int slicecount;
135 int sliceheight;
136 struct pbo *pbo;
137 fz_pixmap *pixmap;
138 struct slice slices[1];
139 };
140
141 struct pagedim {
142 int pageno;
143 int rotate;
144 int left;
145 int tctmready;
146 fz_bbox bounds;
147 fz_rect pagebox;
148 fz_rect mediabox;
149 fz_matrix ctm, zoomctm, lctm, tctm;
150 };
151
152 struct slink {
153 fz_bbox bbox;
154 fz_link *link;
155 };
156
157 enum { DPDF, DXPS, DCBZ };
158
159 struct page {
160 int tgen;
161 int sgen;
162 int type;
163 int pageno;
164 int pdimno;
165 fz_text_page *text;
166 fz_text_sheet *sheet;
167 union {
168 void *ptr;
169 pdf_page *pdfpage;
170 xps_page *xpspage;
171 cbz_page *cbzpage;
172 } u;
173 fz_display_list *dlist;
174 int slinkcount;
175 struct slink *slinks;
176 struct mark {
177 int i;
178 fz_text_span *span;
179 } fmark, lmark;
180 void (*freepage) (void *);
181 };
182
183 struct {
184 int type;
185 int sliceheight;
186 struct pagedim *pagedims;
187 int pagecount;
188 int pagedimcount;
189 union {
190 pdf_document *pdf;
191 xps_document *xps;
192 cbz_document *cbz;
193 } u;
194 fz_context *ctx;
195 int w, h;
196
197 int texindex;
198 int texcount;
199 GLuint *texids;
200
201 GLenum texiform;
202 GLenum texform;
203 GLenum texty;
204
205 fz_colorspace *colorspace;
206
207 struct {
208 int w, h;
209 struct slice *slice;
210 } *texowners;
211
212 int rotate;
213 int proportional;
214 int trimmargins;
215 int needoutline;
216 int gen;
217 int aalevel;
218
219 int trimanew;
220 fz_bbox trimfuzz;
221 fz_pixmap *pig;
222
223 pthread_t thread;
224 int cr, cw;
225 FT_Face face;
226
227 void (*closedoc) (void);
228 void (*freepage) (void *);
229
230 char *trimcachepath;
231
232 int pbo_usable;
233 void (*glBindBufferARB) (GLenum, GLuint);
234 GLboolean (*glUnmapBufferARB) (GLenum);
235 void *(*glMapBufferARB) (GLenum, GLenum);
236 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
237 void (*glGenBuffersARB) (GLsizei, GLuint *);
238 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
239 } state;
240
241 struct pbo {
242 GLuint id;
243 void *ptr;
244 size_t size;
245 };
246
247 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
248 {
249 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
250 }
251
252 static void UNUSED_ATTR debug_bbox (const char *cap, fz_bbox r)
253 {
254 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
255 }
256
257 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
258 {
259 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
260 m.a, m.b, m.c, m.d, m.e, m.f);
261 }
262
263 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
264
265 static void lock (const char *cap)
266 {
267 int ret = pthread_mutex_lock (&mutex);
268 if (ret) {
269 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
270 }
271 }
272
273 static void unlock (const char *cap)
274 {
275 int ret = pthread_mutex_unlock (&mutex);
276 if (ret) {
277 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
278 }
279 }
280
281 static int trylock (const char *cap)
282 {
283 int ret = pthread_mutex_trylock (&mutex);
284 if (ret && ret != EBUSY) {
285 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
286 }
287 return ret == EBUSY;
288 }
289
290 static void *parse_pointer (const char *cap, const char *s)
291 {
292 int ret;
293 void *ptr;
294
295 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
296 if (ret != 1) {
297 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
298 }
299 return ptr;
300 }
301
302 static double now (void)
303 {
304 struct timeval tv;
305
306 if (gettimeofday (&tv, NULL)) {
307 err (1, "gettimeofday");
308 }
309 return tv.tv_sec + tv.tv_usec*1e-6;
310 }
311
312 static int hasdata (void)
313 {
314 int ret, avail;
315 ret = ioctl (state.cr, FIONREAD, &avail);
316 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
317 return avail > 0;
318 }
319
320 CAMLprim value ml_hasdata (value fd_v)
321 {
322 CAMLparam1 (fd_v);
323 int ret, avail;
324
325 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
326 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
327 CAMLreturn (Val_bool (avail > 0));
328 }
329
330 static void readdata (void *p, int size)
331 {
332 ssize_t n;
333
334 again:
335 n = read (state.cr, p, size);
336 if (n < 0) {
337 if (errno == EINTR) goto again;
338 err (1, "read (req %d, ret %zd)", size, n);
339 }
340 if (n - size) {
341 if (!n) errx (1, "EOF while reading");
342 errx (1, "read (req %d, ret %zd)", size, n);
343 }
344 }
345
346 static void writedata (char *p, int size)
347 {
348 char buf[4];
349 ssize_t n;
350
351 buf[0] = (size >> 24) & 0xff;
352 buf[1] = (size >> 16) & 0xff;
353 buf[2] = (size >> 8) & 0xff;
354 buf[3] = (size >> 0) & 0xff;
355
356 n = write (state.cw, buf, 4);
357 if (n != 4) {
358 if (!n) errx (1, "EOF while writing length");
359 err (1, "write %zd", n);
360 }
361
362 n = write (state.cw, p, size);
363 if (n - size) {
364 if (!n) errx (1, "EOF while writing data");
365 err (1, "write (req %d, ret %zd)", size, n);
366 }
367 }
368
369 static int readlen (void)
370 {
371 unsigned char p[4];
372
373 readdata (p, 4);
374 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
375 }
376
377 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
378 {
379 int size = 200, len;
380 va_list ap;
381 char *buf;
382
383 buf = malloc (size);
384 for (;;) {
385 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
386
387 va_start (ap, fmt);
388 len = vsnprintf (buf, size, fmt, ap);
389 va_end (ap);
390
391 if (len > -1 && len < size) {
392 writedata (buf, len);
393 break;
394 }
395
396 if (len > -1) {
397 size = len + 1;
398 }
399 else {
400 size *= 2;
401 }
402 buf = realloc (buf, size);
403 }
404 free (buf);
405 }
406
407 static void closepdf (void)
408 {
409 if (state.u.pdf) {
410 pdf_close_document (state.u.pdf);
411 state.u.pdf = NULL;
412 }
413 }
414
415 static void closexps (void)
416 {
417 if (state.u.xps) {
418 xps_close_document (state.u.xps);
419 state.u.xps = NULL;
420 }
421 }
422
423 static void closecbz (void)
424 {
425 if (state.u.cbz) {
426 cbz_close_document (state.u.cbz);
427 state.u.cbz = NULL;
428 }
429 }
430
431 static void freepdfpage (void *ptr)
432 {
433 pdf_free_page (state.u.pdf, ptr);
434 }
435
436 static void freeemptyxxxpage (void *ptr)
437 {
438 (void) ptr;
439 }
440
441 static void freexpspage (void *ptr)
442 {
443 xps_free_page (state.u.xps, ptr);
444 }
445
446 static void freecbzpage (void *ptr)
447 {
448 cbz_free_page (state.u.cbz, ptr);
449 }
450
451 static void openxref (char *filename, char *password)
452 {
453 int i, len;
454
455 for (i = 0; i < state.texcount; ++i) {
456 state.texowners[i].w = -1;
457 state.texowners[i].slice = NULL;
458 }
459
460 if (state.closedoc) state.closedoc ();
461
462 len = strlen (filename);
463
464 state.type = DPDF;
465 if (len > 4) {
466 char ext[4];
467
468 ext[0] = tolower ((int) filename[len-3]);
469 ext[1] = tolower ((int) filename[len-2]);
470 ext[2] = tolower ((int) filename[len-1]);
471
472 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
473 state.type = DXPS;
474 }
475 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
476 state.type = DCBZ;
477 }
478 }
479
480 if (state.pagedims) {
481 free (state.pagedims);
482 state.pagedims = NULL;
483 }
484 state.pagedimcount = 0;
485
486 fz_set_aa_level (state.ctx, state.aalevel);
487 switch (state.type) {
488 case DPDF:
489 state.u.pdf = pdf_open_document (state.ctx, filename);
490 if (pdf_needs_password (state.u.pdf)) {
491 int okay = pdf_authenticate_password (state.u.pdf, password);
492 if (!okay) {
493 errx (1, "invalid password");
494 }
495 }
496 state.pagecount = pdf_count_pages (state.u.pdf);
497 state.closedoc = closepdf;
498 state.freepage = freepdfpage;
499 break;
500
501 case DXPS:
502 state.u.xps = xps_open_document (state.ctx, filename);
503 state.pagecount = xps_count_pages (state.u.xps);
504 state.closedoc = closexps;
505 state.freepage = freexpspage;
506 break;
507
508 case DCBZ:
509 state.u.cbz = cbz_open_document (state.ctx, filename);
510 state.pagecount = cbz_count_pages (state.u.cbz);
511 state.closedoc = closecbz;
512 state.freepage = freecbzpage;
513 break;
514 }
515 }
516
517 static void pdfinfo (void)
518 {
519 if (state.type == DPDF) {
520 pdf_obj *infoobj;
521
522 printd ("info PDF version\t%d.%d",
523 state.u.pdf->version / 10, state.u.pdf->version % 10);
524
525 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
526 if (infoobj) {
527 int i;
528 char *s;
529 char *items[] = { "Title", "Author", "Creator",
530 "Producer", "CreationDate" };
531
532 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
533 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
534 s = pdf_to_utf8 (state.u.pdf, obj);
535 if (*s) {
536 if (i == 0) {
537 printd ("title %s", s);
538 }
539 printd ("info %s\t%s", items[i], s);
540 }
541 fz_free (state.ctx, s);
542 }
543 }
544 printd ("infoend");
545 }
546 }
547
548 static void unlinktile (struct tile *tile)
549 {
550 int i;
551
552 for (i = 0; i < tile->slicecount; ++i) {
553 struct slice *s = &tile->slices[i];
554
555 if (s->texindex != -1) {
556 if (state.texowners[s->texindex].slice == s) {
557 state.texowners[s->texindex].slice = NULL;
558 }
559 }
560 }
561 }
562
563 static void freepage (struct page *page)
564 {
565 if (page->text) {
566 fz_free_text_page (state.ctx, page->text);
567 }
568 if (page->sheet) {
569 fz_free_text_sheet (state.ctx, page->sheet);
570 }
571 if (page->slinks) {
572 free (page->slinks);
573 }
574 page->freepage (page->u.ptr);
575 fz_free_display_list (state.ctx, page->dlist);
576 free (page);
577 }
578
579 static void freetile (struct tile *tile)
580 {
581 unlinktile (tile);
582 if (!tile->pbo) {
583 #ifndef PIGGYBACK
584 fz_drop_pixmap (state.ctx, tile->pixmap);
585 #else
586 if (state.pig) {
587 fz_drop_pixmap (state.ctx, state.pig);
588 }
589 state.pig = tile->pixmap;
590 #endif
591 }
592 else {
593 free (tile->pbo);
594 fz_drop_pixmap (state.ctx, tile->pixmap);
595 }
596 free (tile);
597 }
598
599 #ifdef __ALTIVEC__
600 #include <altivec.h>
601
602 static int cacheline32bytes;
603
604 static void __attribute__ ((constructor)) clcheck (void)
605 {
606 char **envp = environ;
607 unsigned long *auxv;
608
609 while (*envp++);
610
611 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
612 if (*auxv == 19) {
613 cacheline32bytes = auxv[1] == 32;
614 return;
615 }
616 }
617 }
618
619 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
620 {
621 size_t size = pixmap->w * pixmap->h * pixmap->n;
622 if (cacheline32bytes && size > 32) {
623 intptr_t a1, a2, diff;
624 size_t sizea, i;
625 vector unsigned char v = vec_splat_u8 (-1);
626 vector unsigned char *p;
627
628 a1 = a2 = (intptr_t) pixmap->samples;
629 a2 = (a1 + 31) & ~31;
630 diff = a2 - a1;
631 sizea = size - diff;
632 p = (void *) a2;
633
634 while (a1 != a2) *(char *) a1++ = 0xff;
635 for (i = 0; i < (sizea & ~31); i += 32) {
636 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
637 vec_st (v, i, p);
638 vec_st (v, i + 16, p);
639 }
640 while (i < sizea) *((char *) a1 + i++) = 0xff;
641 }
642 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
643 }
644 #else
645 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
646 #endif
647
648 static fz_matrix trimctm (pdf_page *page, int pindex)
649 {
650 fz_matrix ctm;
651 struct pagedim *pdim = &state.pagedims[pindex];
652
653 if (!pdim->tctmready) {
654 if (state.trimmargins) {
655 fz_rect realbox;
656
657 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
658 realbox = fz_transform_rect (ctm, pdim->mediabox);
659 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
660 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
661 }
662 else {
663 ctm = fz_identity;
664 }
665 pdim->tctm = ctm;
666 pdim->tctmready = 1;
667 }
668 return pdim->tctm;
669 }
670
671 static fz_matrix pagectm (struct page *page)
672 {
673 if (page->type == DPDF) {
674 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
675 state.pagedims[page->pdimno].ctm);
676 }
677 else {
678 fz_matrix ctm;
679 struct pagedim *pdim = &state.pagedims[page->pdimno];
680
681 ctm = state.pagedims[page->pdimno].ctm;
682 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
683 -pdim->mediabox.y0), ctm);
684 return ctm;
685 }
686 }
687
688 static void *loadpage (int pageno, int pindex)
689 {
690 fz_device *dev;
691 struct page *page = NULL;
692
693 page = calloc (sizeof (struct page), 1);
694 if (!page) {
695 err (1, "calloc page %d", pageno);
696 }
697
698 page->dlist = fz_new_display_list (state.ctx);
699 dev = fz_new_list_device (state.ctx, page->dlist);
700 fz_try (state.ctx) {
701 switch (state.type) {
702 case DPDF:
703 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
704 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
705 page->freepage = freepdfpage;
706 break;
707
708 case DXPS:
709 page->u.xpspage = xps_load_page (state.u.xps, pageno);
710 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
711 page->freepage = freexpspage;
712 break;
713
714 case DCBZ:
715 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
716 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
717 page->freepage = freecbzpage;
718 break;
719 }
720 }
721 fz_catch (state.ctx) {
722 page->u.ptr = NULL;
723 page->freepage = freeemptyxxxpage;
724 }
725 fz_free_device (dev);
726
727 page->pdimno = pindex;
728 page->pageno = pageno;
729 page->sgen = state.gen;
730 page->tgen = state.gen;
731 page->type = state.type;
732
733 return page;
734 }
735
736 static struct tile *alloctile (int h)
737 {
738 int i;
739 int slicecount;
740 size_t tilesize;
741 struct tile *tile;
742
743 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
744 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
745 tile = calloc (tilesize, 1);
746 if (!tile) {
747 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
748 }
749 for (i = 0; i < slicecount; ++i) {
750 int sh = MIN (h, state.sliceheight);
751 tile->slices[i].h = sh;
752 tile->slices[i].texindex = -1;
753 h -= sh;
754 }
755 tile->slicecount = slicecount;
756 tile->sliceheight = state.sliceheight;
757 return tile;
758 }
759
760 #ifdef OBSCURED_OPT
761 struct obs {
762 int cured;
763 fz_bbox b;
764 };
765
766 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
767 float alpha)
768 {
769 struct obs *obs = dev->user;
770
771 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
772 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
773 b = fz_intersect_bbox (b, obs->b);
774 obs->cured = b.x0 == obs->b.x0
775 && b.x1 == obs->b.x1
776 && b.y0 == obs->b.y0
777 && b.y1 == obs->b.y1;
778 }
779 }
780
781 static int obscured (struct page *page, fz_bbox bbox)
782 {
783 fz_device dev;
784 struct obs obs;
785
786 memset (&dev, 0, sizeof (dev));
787 memset (&obs, 0, sizeof (obs));
788 dev.hints = 0;
789 dev.flags = 0;
790 dev.user = &obs;
791 dev.ctx = state.ctx;
792 dev.fill_image = obs_fill_image;
793 obs.b = bbox;
794 fz_run_display_list (page->dlist, &dev, pagectm (page), bbox, NULL);
795 return obs.cured;
796 }
797 #define OBSCURED obscured
798 #else
799 #define OBSCURED(a, b) 0
800 #endif
801
802 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
803 struct pbo *pbo)
804 {
805 fz_bbox bbox;
806 fz_device *dev;
807 struct tile *tile;
808 struct pagedim *pdim;
809
810 tile = alloctile (h);
811 pdim = &state.pagedims[page->pdimno];
812
813 bbox = pdim->bounds;
814 bbox.x0 += x;
815 bbox.y0 += y;
816 bbox.x1 = bbox.x0 + w;
817 bbox.y1 = bbox.y0 + h;
818
819 if (state.pig) {
820 if (state.pig->w == w
821 && state.pig->h == h
822 && state.pig->colorspace == state.colorspace) {
823 tile->pixmap = state.pig;
824 tile->pixmap->x = bbox.x0;
825 tile->pixmap->y = bbox.y0;
826 }
827 else {
828 fz_drop_pixmap (state.ctx, state.pig);
829 }
830 state.pig = NULL;
831 }
832 if (!tile->pixmap) {
833 if (pbo) {
834 tile->pixmap =
835 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
836 bbox, pbo->ptr);
837 tile->pbo = pbo;
838 }
839 else {
840 tile->pixmap =
841 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
842 }
843 }
844
845 tile->w = w;
846 tile->h = h;
847 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
848 clearpixmap (tile->pixmap);
849 }
850 dev = fz_new_draw_device (state.ctx, tile->pixmap);
851 fz_run_display_list (page->dlist, dev, pagectm (page), bbox, NULL);
852 fz_free_device (dev);
853
854 return tile;
855 }
856
857 static void initpdims (void)
858 {
859 double start, end;
860 int pageno, trim, show;
861 FILE *trimf = NULL;
862 int trimw = 0;
863
864 start = now ();
865
866 if (state.trimmargins && state.trimcachepath) {
867 trimf = fopen (state.trimcachepath, "rb");
868 if (!trimf) {
869 trimf = fopen (state.trimcachepath, "wb");
870 trimw = 1;
871 }
872 }
873 for (pageno = 0; pageno < state.pagecount; ++pageno) {
874 int rotate = 0;
875 struct pagedim *p;
876 fz_rect mediabox;
877
878 switch (state.type) {
879 case DPDF: {
880 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
881
882 if (state.trimmargins) {
883 pdf_obj *obj;
884 pdf_page *page;
885
886 fz_try (state.ctx) {
887 page = pdf_load_page (state.u.pdf, pageno);
888 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
889 trim = state.trimanew || !obj;
890 if (trim) {
891 fz_rect rect;
892 fz_bbox bbox;
893 fz_matrix ctm;
894 fz_device *dev;
895
896 dev = fz_new_bbox_device (state.ctx, &bbox);
897 dev->hints |= FZ_IGNORE_SHADE;
898 ctm = fz_invert_matrix (page->ctm);
899 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
900 fz_free_device (dev);
901
902 rect.x0 = bbox.x0 + state.trimfuzz.x0;
903 rect.x1 = bbox.x1 + state.trimfuzz.x1;
904 rect.y0 = bbox.y0 + state.trimfuzz.y0;
905 rect.y1 = bbox.y1 + state.trimfuzz.y1;
906 rect = fz_transform_rect (ctm, rect);
907 rect = fz_intersect_rect (rect, page->mediabox);
908
909 if (fz_is_empty_rect (rect)) {
910 mediabox = page->mediabox;
911 }
912 else {
913 mediabox = rect;
914 }
915
916 obj = pdf_new_array (state.ctx, 4);
917 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
918 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
919 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
920 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
921 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
922 }
923 else {
924 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
925 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
926 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
927 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
928 }
929
930 rotate = page->rotate;
931 pdf_free_page (state.u.pdf, page);
932
933 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
934 if (show) {
935 printd ("progress %f Trimming %d",
936 (double) (pageno + 1) / state.pagecount,
937 pageno + 1);
938 }
939 }
940 fz_catch (state.ctx) {
941 fprintf (stderr, "failed to load page %d\n", pageno+1);
942 }
943 }
944 else {
945 fz_rect cropbox;
946
947 mediabox = pdf_to_rect (state.ctx,
948 pdf_dict_gets (pageobj, "MediaBox"));
949 if (fz_is_empty_rect (mediabox)) {
950 fprintf (stderr, "cannot find page size for page %d\n",
951 pageno+1);
952 mediabox.x0 = 0;
953 mediabox.y0 = 0;
954 mediabox.x1 = 612;
955 mediabox.y1 = 792;
956 }
957
958 cropbox = pdf_to_rect (state.ctx,
959 pdf_dict_gets (pageobj, "CropBox"));
960 if (!fz_is_empty_rect (cropbox)) {
961 mediabox = fz_intersect_rect (mediabox, cropbox);
962 }
963 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
964 }
965 break;
966 }
967
968 case DXPS:
969 {
970 xps_page *page;
971
972 fz_try (state.ctx) {
973 page = xps_load_page (state.u.xps, pageno);
974 mediabox = xps_bound_page (state.u.xps, page);
975 rotate = 0;
976 if (state.trimmargins) {
977 fz_rect rect;
978 fz_bbox bbox;
979 fz_device *dev;
980
981 dev = fz_new_bbox_device (state.ctx, &bbox);
982 dev->hints |= FZ_IGNORE_SHADE;
983 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
984 fz_free_device (dev);
985
986 rect.x0 = bbox.x0 + state.trimfuzz.x0;
987 rect.x1 = bbox.x1 + state.trimfuzz.x1;
988 rect.y0 = bbox.y0 + state.trimfuzz.y0;
989 rect.y1 = bbox.y1 + state.trimfuzz.y1;
990 rect = fz_intersect_rect (rect, mediabox);
991
992 if (!fz_is_empty_rect (rect)) {
993 mediabox = rect;
994 }
995 }
996 xps_free_page (state.u.xps, page);
997 printd ("progress %f loading %d",
998 (double) (pageno + 1) / state.pagecount,
999 pageno + 1);
1000 }
1001 fz_catch (state.ctx) {
1002 }
1003 }
1004 break;
1005
1006 case DCBZ:
1007 {
1008 rotate = 0;
1009 if (state.trimmargins && trimw) {
1010 cbz_page *page;
1011
1012 fz_try (state.ctx) {
1013 page = cbz_load_page (state.u.cbz, pageno);
1014 mediabox = cbz_bound_page (state.u.cbz, page);
1015 cbz_free_page (state.u.cbz, page);
1016 printd ("progress %f Trimming %d",
1017 (double) (pageno + 1) / state.pagecount,
1018 pageno + 1);
1019 }
1020 fz_catch (state.ctx) {
1021 fprintf (stderr, "failed to load page %d\n", pageno+1);
1022 mediabox.x0 = 0;
1023 mediabox.y0 = 0;
1024 mediabox.x1 = 900;
1025 mediabox.y1 = 900;
1026 }
1027 if (trimf) {
1028 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1029 if (n - 1) {
1030 err (1, "fwrite trim mediabox");
1031 }
1032 }
1033 }
1034 else {
1035 if (trimf) {
1036 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1037 if (n - 1) {
1038 err (1, "fread trim mediabox");
1039 }
1040 }
1041 else {
1042 mediabox.x0 = mediabox.y0 = 0;
1043 mediabox.x1 = 900;
1044 mediabox.y1 = 900;
1045 }
1046 }
1047 }
1048 break;
1049
1050 default:
1051 ARSERT (0 && state.type);
1052 }
1053
1054 if (state.pagedimcount == 0
1055 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1056 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1057 size_t size;
1058
1059 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1060 state.pagedims = realloc (state.pagedims, size);
1061 if (!state.pagedims) {
1062 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1063 size, state.pagedimcount + 1);
1064 }
1065
1066 p = &state.pagedims[state.pagedimcount++];
1067 p->rotate = rotate;
1068 p->mediabox = mediabox;
1069 p->pageno = pageno;
1070 }
1071 }
1072 end = now ();
1073 if (state.trimmargins) {
1074 printd ("progress 1 Trimmed %d pages in %f seconds",
1075 state.pagecount, end - start);
1076 }
1077 else {
1078 printd ("vmsg Processed %d pages in %f seconds",
1079 state.pagecount, end - start);
1080 }
1081 state.trimanew = 0;
1082 if (trimf) {
1083 if (fclose (trimf)) {
1084 err (1, "fclose");
1085 }
1086 }
1087 }
1088
1089 static void layout (void)
1090 {
1091 int pindex;
1092 fz_rect box;
1093 fz_matrix ctm;
1094 double zoom, w, maxw = 0;
1095 struct pagedim *p = state.pagedims;
1096
1097 if (state.proportional) {
1098 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1099 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1100 p->mediabox);
1101 w = box.x1 - box.x0;
1102 maxw = MAX (w, maxw);
1103 }
1104 }
1105
1106 p = state.pagedims;
1107 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1108 fz_bbox bbox;
1109
1110 ctm = fz_rotate (state.rotate);
1111 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1112 p->mediabox);
1113 w = box.x1 - box.x0;
1114
1115 if (state.proportional) {
1116 double scale = w / maxw;
1117 zoom = (state.w / w) * scale;
1118 }
1119 else {
1120 zoom = state.w / w;
1121 }
1122
1123 p->zoomctm = fz_scale (zoom, zoom);
1124 ctm = fz_concat (p->zoomctm, ctm);
1125
1126 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1127 p->pagebox.x1 -= p->pagebox.x0;
1128 p->pagebox.y1 -= p->pagebox.y0;
1129 p->pagebox.x0 = 0;
1130 p->pagebox.y0 = 0;
1131 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1132
1133 p->bounds = bbox;
1134 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1135 p->ctm = ctm;
1136
1137 ctm = fz_identity;
1138 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1139 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1140 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1141 p->lctm = ctm;
1142
1143 p->tctmready = 0;
1144 }
1145
1146 while (p-- != state.pagedims) {
1147 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1148 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1149 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1150 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1151 int w = x1 - x0;
1152 int h = y1 - y0;
1153
1154 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1155 }
1156 }
1157
1158 static void recurse_outline (fz_outline *outline, int level)
1159 {
1160 while (outline) {
1161 fz_link_dest *dest;
1162 int i, top = 0;
1163 struct pagedim *pdim = state.pagedims;
1164
1165 dest = &outline->dest;
1166 for (i = 0; i < state.pagedimcount; ++i) {
1167 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1168 break;
1169 pdim = &state.pagedims[i];
1170 }
1171 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1172 fz_point p;
1173 p.x = 0;
1174 p.y = dest->ld.gotor.lt.y;
1175 p = fz_transform_point (pdim->lctm, p);
1176 top = p.y;
1177 }
1178 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1179 int h;
1180 double y0, y1;
1181
1182 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1183 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1184 h = y1 - y0;
1185 printd ("o %d %d %d %d %s",
1186 level, dest->ld.gotor.page, top, h, outline->title);
1187 }
1188 if (outline->down) {
1189 recurse_outline (outline->down, level + 1);
1190 }
1191 outline = outline->next;
1192 }
1193 }
1194
1195 static void process_outline (void)
1196 {
1197 fz_outline *outline;
1198
1199 if (!state.needoutline) return;
1200
1201 state.needoutline = 0;
1202 switch (state.type) {
1203 case DPDF:
1204 outline = pdf_load_outline (state.u.pdf);
1205 break;
1206 case DXPS:
1207 outline = xps_load_outline (state.u.xps);
1208 break;
1209 default:
1210 outline = NULL;
1211 break;
1212 }
1213 if (outline) {
1214 recurse_outline (outline, 0);
1215 fz_free_outline (state.ctx, outline);
1216 }
1217 }
1218
1219 static char *strofspan (fz_text_span *span)
1220 {
1221 char *p;
1222 char utf8[10];
1223 fz_text_char *ch;
1224 size_t size = 0, cap = 80;
1225
1226 p = malloc (cap + 1);
1227 if (!p) return NULL;
1228
1229 for (ch = span->text; ch < span->text + span->len; ++ch) {
1230 int n = fz_runetochar (utf8, ch->c);
1231 if (size + n > cap) {
1232 cap *= 2;
1233 p = realloc (p, cap + 1);
1234 if (!p) return NULL;
1235 }
1236
1237 memcpy (p + size, utf8, n);
1238 size += n;
1239 }
1240 p[size] = 0;
1241 return p;
1242 }
1243
1244 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1245 int stop, int pageno, double start)
1246 {
1247 int ret;
1248 char *p;
1249 regmatch_t rm;
1250 int a, b, c;
1251 fz_rect *sb, *eb;
1252 fz_point p1, p2, p3, p4;
1253
1254 p = strofspan (span);
1255 if (!p) return -1;
1256
1257 ret = regexec (re, p, 1, &rm, 0);
1258 if (ret) {
1259 free (p);
1260 if (ret != REG_NOMATCH) {
1261 size_t size;
1262 char errbuf[80];
1263 size = regerror (ret, re, errbuf, sizeof (errbuf));
1264 printd ("msg regexec error `%.*s'",
1265 (int) size, errbuf);
1266 return -1;
1267 }
1268 return 0;
1269 }
1270 else {
1271 int l = span->len;
1272 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1273 c += fz_runelen (span->text[a].c);
1274 }
1275 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1276 c += fz_runelen (span->text[b].c);
1277 }
1278
1279 if (fz_runelen (span->text[b].c) > 1) {
1280 b = MAX (0, b-1);
1281 }
1282 sb = &span->text[MIN (a, l-1)].bbox;
1283 eb = &span->text[MIN (b, l-1)].bbox;
1284
1285 p1.x = sb->x0;
1286 p1.y = sb->y0;
1287 p2.x = eb->x1;
1288 p2.y = sb->y0;
1289 p3.x = eb->x1;
1290 p3.y = eb->y1;
1291 p4.x = sb->x0;
1292 p4.y = eb->y1;
1293
1294 if (!stop) {
1295 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1296 pageno, 1,
1297 p1.x, p1.y,
1298 p2.x, p2.y,
1299 p3.x, p3.y,
1300 p4.x, p4.y);
1301
1302 printd ("progress 1 found at %d `%.*s' in %f sec",
1303 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1304 now () - start);
1305 }
1306 else {
1307 printd ("match %d %d %f %f %f %f %f %f %f %f",
1308 pageno, 2,
1309 p1.x, p1.y,
1310 p2.x, p2.y,
1311 p3.x, p3.y,
1312 p4.x, p4.y);
1313 }
1314 free (p);
1315 return 1;
1316 }
1317 }
1318
1319 static int compareblocks (const void *l, const void *r)
1320 {
1321 fz_text_block const *ls = l;
1322 fz_text_block const* rs = r;
1323 return ls->bbox.y0 - rs->bbox.y0;
1324 }
1325
1326 /* wishful thinking function */
1327 static void search (regex_t *re, int pageno, int y, int forward)
1328 {
1329 int i, j;
1330 fz_matrix ctm;
1331 fz_device *tdev;
1332 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1333 fz_text_page *text;
1334 fz_text_sheet *sheet;
1335 struct pagedim *pdim, *pdimprev;
1336 int stop = 0, niters = 0;
1337 double start, end;
1338
1339 if (!(state.type == DPDF || state.type == DXPS))
1340 return;
1341
1342 start = now ();
1343 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1344 if (niters++ == 5) {
1345 niters = 0;
1346 if (hasdata ()) {
1347 printd ("progress 1 attention requested aborting search at %d",
1348 pageno);
1349 stop = 1;
1350 }
1351 else {
1352 printd ("progress %f searching in page %d",
1353 (double) (pageno + 1) / state.pagecount,
1354 pageno);
1355 }
1356 }
1357 pdimprev = NULL;
1358 for (i = 0; i < state.pagedimcount; ++i) {
1359 pdim = &state.pagedims[i];
1360 if (pdim->pageno == pageno) {
1361 goto found;
1362 }
1363 if (pdim->pageno > pageno) {
1364 pdim = pdimprev;
1365 goto found;
1366 }
1367 pdimprev = pdim;
1368 }
1369 pdim = pdimprev;
1370 found:
1371
1372 sheet = fz_new_text_sheet (state.ctx);
1373 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1374 tdev = fz_new_text_device (state.ctx, sheet, text);
1375
1376 switch (state.type) {
1377 case DPDF:
1378 u.ptr = NULL;
1379 fz_try (state.ctx) {
1380 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1381 trimctm (u.pdfpage, pdim - state.pagedims);
1382 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1383 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1384 }
1385 fz_catch (state.ctx) {
1386 fz_free_device (tdev);
1387 u.ptr = NULL;
1388 goto nextiter;
1389 }
1390 break;
1391
1392 case DXPS:
1393 u.xpspage = xps_load_page (state.u.xps, pageno);
1394 ctm = pdim->ctm;
1395 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1396 break;
1397
1398 default:
1399 ARSERT (0 && state.type);
1400 }
1401
1402 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1403 fz_free_device (tdev);
1404
1405 for (j = 0; j < text->len; ++j) {
1406 int k;
1407 fz_text_block *block;
1408
1409 block = &text->blocks[forward ? j : text->len - 1 - j];
1410
1411 for (k = 0; k < block->len; ++k) {
1412 fz_text_line *line;
1413 fz_text_span *span;
1414
1415 if (forward) {
1416 line = &block->lines[k];
1417 if (line->bbox.y0 < y + 1) continue;
1418 }
1419 else {
1420 line = &block->lines[block->len - 1 - k];
1421 if (line->bbox.y0 > y - 1) continue;
1422 }
1423
1424 for (span = line->spans;
1425 span < line->spans + line->len;
1426 ++span) {
1427
1428 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1429 case 0: break;
1430 case 1: stop = 1; break;
1431 case -1: stop = 1; goto endloop;
1432 }
1433 }
1434 }
1435 }
1436 nextiter:
1437 if (forward) {
1438 pageno += 1;
1439 y = 0;
1440 }
1441 else {
1442 pageno -= 1;
1443 y = INT_MAX;
1444 }
1445 endloop:
1446 fz_free_text_page (state.ctx, text);
1447 fz_free_text_sheet (state.ctx, sheet);
1448 if (u.ptr) {
1449 state.freepage (u.ptr);
1450 }
1451 }
1452 end = now ();
1453 if (!stop) {
1454 printd ("progress 1 no matches %f sec", end - start);
1455 }
1456 printd ("clearrects");
1457 }
1458
1459 static void set_tex_params (int colorspace)
1460 {
1461 union {
1462 unsigned char b;
1463 unsigned int s;
1464 } endianness = {1};
1465
1466 switch (colorspace) {
1467 case 0:
1468 state.texiform = GL_RGBA8;
1469 state.texform = GL_RGBA;
1470 state.texty = GL_UNSIGNED_BYTE;
1471 state.colorspace = fz_device_rgb;
1472 break;
1473 case 1:
1474 state.texiform = GL_RGBA8;
1475 state.texform = GL_BGRA;
1476 state.texty = endianness.s > 1
1477 ? GL_UNSIGNED_INT_8_8_8_8
1478 : GL_UNSIGNED_INT_8_8_8_8_REV;
1479 state.colorspace = fz_device_bgr;
1480 break;
1481 case 2:
1482 state.texiform = GL_LUMINANCE_ALPHA;
1483 state.texform = GL_LUMINANCE_ALPHA;
1484 state.texty = GL_UNSIGNED_BYTE;
1485 state.colorspace = fz_device_gray;
1486 break;
1487 default:
1488 errx (1, "invalid colorspce %d", colorspace);
1489 }
1490 }
1491
1492 static void realloctexts (int texcount)
1493 {
1494 size_t size;
1495
1496 if (texcount == state.texcount) return;
1497
1498 if (texcount < state.texcount) {
1499 glDeleteTextures (state.texcount - texcount,
1500 state.texids + texcount);
1501 }
1502
1503 size = texcount * sizeof (*state.texids);
1504 state.texids = realloc (state.texids, size);
1505 if (!state.texids) {
1506 err (1, "realloc texids %" FMT_s, size);
1507 }
1508
1509 size = texcount * sizeof (*state.texowners);
1510 state.texowners = realloc (state.texowners, size);
1511 if (!state.texowners) {
1512 err (1, "realloc texowners %" FMT_s, size);
1513 }
1514 if (texcount > state.texcount) {
1515 int i;
1516
1517 glGenTextures (texcount - state.texcount,
1518 state.texids + state.texcount);
1519 for (i = state.texcount; i < texcount; ++i) {
1520 state.texowners[i].w = -1;
1521 state.texowners[i].slice = NULL;
1522 }
1523 }
1524 state.texcount = texcount;
1525 state.texindex = 0;
1526 }
1527
1528 static char *mbtoutf8 (char *s)
1529 {
1530 char *p, *r;
1531 wchar_t *tmp;
1532 size_t i, ret, len;
1533
1534 len = mbstowcs (NULL, s, strlen (s));
1535 if (len == 0) {
1536 return s;
1537 }
1538 else {
1539 if (len == (size_t) -1) {
1540 return s;
1541 }
1542 }
1543
1544 tmp = malloc (len * sizeof (wchar_t));
1545 if (!tmp) {
1546 return s;
1547 }
1548
1549 ret = mbstowcs (tmp, s, len);
1550 if (ret == (size_t) -1) {
1551 free (tmp);
1552 return s;
1553 }
1554
1555 len = 0;
1556 for (i = 0; i < ret; ++i) {
1557 len += fz_runelen (tmp[i]);
1558 }
1559
1560 p = r = malloc (len + 1);
1561 if (!r) {
1562 free (tmp);
1563 return s;
1564 }
1565
1566 for (i = 0; i < ret; ++i) {
1567 p += fz_runetochar (p, tmp[i]);
1568 }
1569 *p = 0;
1570 free (tmp);
1571 return r;
1572 }
1573
1574 CAMLprim value ml_mbtoutf8 (value s_v)
1575 {
1576 CAMLparam1 (s_v);
1577 CAMLlocal1 (ret_v);
1578 char *s, *r;
1579
1580 s = String_val (s_v);
1581 r = mbtoutf8 (s);
1582 if (r == s) {
1583 ret_v = s_v;
1584 }
1585 else {
1586 ret_v = caml_copy_string (r);
1587 free (r);
1588 }
1589 CAMLreturn (ret_v);
1590 }
1591
1592 static void * mainloop (void *unused)
1593 {
1594 char *p = NULL;
1595 int len, ret, oldlen = 0;
1596
1597 for (;;) {
1598 len = readlen ();
1599 if (len == 0) {
1600 errx (1, "readlen returned 0");
1601 }
1602
1603 if (oldlen < len + 1) {
1604 p = realloc (p, len + 1);
1605 if (!p) {
1606 err (1, "realloc %d failed", len + 1);
1607 }
1608 oldlen = len + 1;
1609 }
1610 readdata (p, len);
1611 p[len] = 0;
1612
1613 if (!strncmp ("open", p, 4)) {
1614 size_t filenamelen;
1615 int wthack, off;
1616 char *password;
1617 char *filename;
1618 char *utf8filename;
1619
1620 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1621 if (ret != 1) {
1622 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1623 }
1624
1625 filename = p + 5 + off;
1626 filenamelen = strlen (filename);
1627 password = filename + filenamelen + 1;
1628
1629 openxref (filename, password);
1630 pdfinfo ();
1631 initpdims ();
1632 if (!wthack) {
1633 utf8filename = mbtoutf8 (filename);
1634 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1635 if (utf8filename != filename) {
1636 free (utf8filename);
1637 }
1638 }
1639 state.needoutline = 1;
1640 }
1641 else if (!strncmp ("cs", p, 2)) {
1642 int i, colorspace;
1643
1644 ret = sscanf (p + 2, " %d", &colorspace);
1645 if (ret != 1) {
1646 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1647 }
1648 lock ("cs");
1649 set_tex_params (colorspace);
1650 for (i = 0; i < state.texcount; ++i) {
1651 state.texowners[i].w = -1;
1652 state.texowners[i].slice = NULL;
1653 }
1654 unlock ("cs");
1655 }
1656 else if (!strncmp ("freepage", p, 8)) {
1657 void *ptr;
1658
1659 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1660 if (ret != 1) {
1661 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1662 }
1663 freepage (ptr);
1664 }
1665 else if (!strncmp ("freetile", p, 8)) {
1666 void *ptr;
1667
1668 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1669 if (ret != 1) {
1670 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1671 }
1672 freetile (ptr);
1673 }
1674 else if (!strncmp ("search", p, 6)) {
1675 int icase, pageno, y, ret, len2, forward;
1676 char *pattern;
1677 regex_t re;
1678
1679 ret = sscanf (p + 6, " %d %d %d %d,%n",
1680 &icase, &pageno, &y, &forward, &len2);
1681 if (ret != 4) {
1682 errx (1, "malformed search `%s' ret=%d", p, ret);
1683 }
1684
1685 pattern = p + 6 + len2;
1686 ret = regcomp (&re, pattern,
1687 REG_EXTENDED | (icase ? REG_ICASE : 0));
1688 if (ret) {
1689 char errbuf[80];
1690 size_t size;
1691
1692 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1693 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1694 }
1695 else {
1696 search (&re, pageno, y, forward);
1697 regfree (&re);
1698 }
1699 }
1700 else if (!strncmp ("geometry", p, 8)) {
1701 int w, h;
1702
1703 printd ("clear");
1704 ret = sscanf (p + 8, " %d %d", &w, &h);
1705 if (ret != 2) {
1706 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1707 }
1708
1709 lock ("geometry");
1710 state.h = h;
1711 if (w != state.w) {
1712 int i;
1713 state.w = w;
1714 for (i = 0; i < state.texcount; ++i) {
1715 state.texowners[i].slice = NULL;
1716 }
1717 }
1718 layout ();
1719 process_outline ();
1720 state.gen++;
1721 unlock ("geometry");
1722 printd ("continue %d", state.pagecount);
1723 }
1724 else if (!strncmp ("reqlayout", p, 9)) {
1725 int rotate, proportional;
1726
1727 printd ("clear");
1728 ret = sscanf (p + 9, " %d %d", &rotate, &proportional);
1729 if (ret != 2) {
1730 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1731 }
1732 lock ("reqlayout");
1733 if (state.rotate != rotate || state.proportional != proportional) {
1734 state.gen += 1;
1735 }
1736 state.rotate = rotate;
1737 state.proportional = proportional;
1738 layout ();
1739 process_outline ();
1740 state.gen++;
1741 unlock ("reqlayout");
1742 printd ("continue %d", state.pagecount);
1743 }
1744 else if (!strncmp ("page", p, 4)) {
1745 double a, b;
1746 struct page *page;
1747 int pageno, pindex, ret;
1748
1749 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1750 if (ret != 2) {
1751 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1752 }
1753
1754 lock ("page");
1755 a = now ();
1756 page = loadpage (pageno, pindex);
1757 b = now ();
1758 unlock ("page");
1759
1760 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1761 }
1762 else if (!strncmp ("tile", p, 4)) {
1763 int x, y, w, h, ret;
1764 struct page *page;
1765 struct tile *tile;
1766 double a, b;
1767 void *data;
1768
1769 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1770 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1771 if (ret != 6) {
1772 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1773 }
1774
1775 lock ("tile");
1776 a = now ();
1777 tile = rendertile (page, x, y, w, h, data);
1778 b = now ();
1779 unlock ("tile");
1780
1781 printd ("tile %d %d %" FMT_ptr " %u %f",
1782 x, y,
1783 FMT_ptr_cast2 (tile),
1784 tile->w * tile->h * tile->pixmap->n,
1785 b - a);
1786 }
1787 else if (!strncmp ("settrim", p, 7)) {
1788 int trimmargins;
1789 fz_bbox fuzz;
1790
1791 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1792 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1793 if (ret != 5) {
1794 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1795 }
1796 printd ("clear");
1797 lock ("settrim");
1798 state.trimmargins = trimmargins;
1799 state.needoutline = 1;
1800 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1801 state.trimanew = 1;
1802 state.trimfuzz = fuzz;
1803 }
1804 state.pagedimcount = 0;
1805 free (state.pagedims);
1806 state.pagedims = NULL;
1807 initpdims ();
1808 layout ();
1809 process_outline ();
1810 unlock ("settrim");
1811 printd ("continue %d", state.pagecount);
1812 }
1813 else if (!strncmp ("sliceh", p, 6)) {
1814 int h;
1815
1816 ret = sscanf (p + 6, " %d", &h);
1817 if (ret != 1) {
1818 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1819 }
1820 if (h != state.sliceheight) {
1821 int i;
1822
1823 state.sliceheight = h;
1824 for (i = 0; i < state.texcount; ++i) {
1825 state.texowners[i].w = -1;
1826 state.texowners[i].h = -1;
1827 state.texowners[i].slice = NULL;
1828 }
1829 }
1830 }
1831 else if (!strncmp ("interrupt", p, 9)) {
1832 printd ("vmsg interrupted");
1833 }
1834 else {
1835 errx (1, "unknown command %.*s", len, p);
1836 }
1837 }
1838 return 0;
1839 }
1840
1841 CAMLprim value ml_realloctexts (value texcount_v)
1842 {
1843 CAMLparam1 (texcount_v);
1844 int ok;
1845
1846 if (trylock ("ml_realloctexts")) {
1847 ok = 0;
1848 goto done;
1849 }
1850 realloctexts (Int_val (texcount_v));
1851 ok = 1;
1852 unlock ("ml_realloctexts");
1853
1854 done:
1855 CAMLreturn (Val_bool (ok));
1856 }
1857
1858 static void showsel (struct page *page, int ox, int oy)
1859 {
1860 int seen = 0;
1861 fz_bbox bbox;
1862 fz_text_line *line;
1863 fz_text_span *span;
1864 fz_text_block *block;
1865 struct mark first, last;
1866
1867 first = page->fmark;
1868 last = page->lmark;
1869
1870 if (!first.span || !last.span) return;
1871
1872 glEnable (GL_BLEND);
1873 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1874 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1875
1876 ox += state.pagedims[page->pdimno].bounds.x0;
1877 oy += state.pagedims[page->pdimno].bounds.y0;
1878 for (block = page->text->blocks;
1879 block < page->text->blocks + page->text->len;
1880 ++block) {
1881 for (line = block->lines;
1882 line < block->lines + block->len;
1883 ++line) {
1884 for (span = line->spans;
1885 span < line->spans + line->len;
1886 ++span) {
1887 int i, j, k;
1888
1889 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1890
1891 j = 0;
1892 k = span->len - 1;
1893
1894 if (span == page->fmark.span && span == page->lmark.span) {
1895 seen = 1;
1896 j = MIN (first.i, last.i);
1897 k = MAX (first.i, last.i);
1898 }
1899 else if (span == first.span) {
1900 seen = 1;
1901 j = first.i;
1902 }
1903 else if (span == last.span) {
1904 seen = 1;
1905 k = last.i;
1906 }
1907
1908 if (seen) {
1909 for (i = j; i <= k; ++i) {
1910 fz_bbox b = fz_round_rect (span->text[i].bbox);
1911 bbox = fz_union_bbox (bbox, b);
1912 }
1913 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1914 bbox.x0,
1915 bbox.y0,
1916 bbox.x1,
1917 bbox.y1,
1918 oy, ox);
1919
1920 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1921 bbox.x1 + ox, bbox.y1 + oy);
1922 if (span == last.span) {
1923 goto done;
1924 }
1925 }
1926 }
1927 }
1928 }
1929 done:
1930 glDisable (GL_BLEND);
1931 }
1932
1933 #include "glfont.c"
1934
1935 static void highlightlinks (struct page *page, int xoff, int yoff)
1936 {
1937 fz_matrix ctm;
1938 fz_link *link, *links;
1939
1940 switch (page->type) {
1941 case DPDF:
1942 links = page->u.pdfpage->links;
1943 break;
1944
1945 case DXPS:
1946 links = page->u.xpspage->links;
1947 break;
1948
1949 default:
1950 return;
1951 }
1952
1953 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1954 glEnable (GL_LINE_STIPPLE);
1955 glLineStipple (0.5, 0xcccc);
1956
1957 xoff -= state.pagedims[page->pdimno].bounds.x0;
1958 yoff -= state.pagedims[page->pdimno].bounds.y0;
1959 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
1960
1961 glBegin (GL_QUADS);
1962 for (link = links; link; link = link->next) {
1963 fz_point p1, p2, p3, p4;
1964
1965 p1.x = link->rect.x0;
1966 p1.y = link->rect.y0;
1967
1968 p2.x = link->rect.x1;
1969 p2.y = link->rect.y0;
1970
1971 p3.x = link->rect.x1;
1972 p3.y = link->rect.y1;
1973
1974 p4.x = link->rect.x0;
1975 p4.y = link->rect.y1;
1976
1977 p1 = fz_transform_point (ctm, p1);
1978 p2 = fz_transform_point (ctm, p2);
1979 p3 = fz_transform_point (ctm, p3);
1980 p4 = fz_transform_point (ctm, p4);
1981
1982 switch (link->dest.kind) {
1983 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
1984 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
1985 default: glColor3ub (0, 0, 0); break;
1986 }
1987
1988 glVertex2f (p1.x, p1.y);
1989 glVertex2f (p2.x, p2.y);
1990 glVertex2f (p3.x, p3.y);
1991 glVertex2f (p4.x, p4.y);
1992 }
1993 glEnd ();
1994
1995 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1996 glDisable (GL_LINE_STIPPLE);
1997 }
1998
1999 static int compareslinks (const void *l, const void *r)
2000 {
2001 struct slink const *ls = l;
2002 struct slink const *rs = r;
2003 if (ls->bbox.y0 == rs->bbox.y0) {
2004 return rs->bbox.x0 - rs->bbox.x0;
2005 }
2006 return ls->bbox.y0 - rs->bbox.y0;
2007 }
2008
2009 static void droptext (struct page *page)
2010 {
2011 if (page->text) {
2012 fz_free_text_page (state.ctx, page->text);
2013 page->fmark.i = -1;
2014 page->lmark.i = -1;
2015 page->fmark.span = NULL;
2016 page->lmark.span = NULL;
2017 page->text = NULL;
2018 }
2019 if (page->sheet) {
2020 fz_free_text_sheet (state.ctx, page->sheet);
2021 }
2022 }
2023
2024 static void dropslinks (struct page *page)
2025 {
2026 if (page->slinks) {
2027 free (page->slinks);
2028 page->slinks = NULL;
2029 page->slinkcount = 0;
2030 }
2031 }
2032
2033 static void ensureslinks (struct page *page)
2034 {
2035 fz_matrix ctm;
2036 int i, count = 0;
2037 size_t slinksize = sizeof (*page->slinks);
2038 fz_link *link, *links;
2039
2040 if (state.gen != page->sgen) {
2041 dropslinks (page);
2042 page->sgen = state.gen;
2043 }
2044 if (page->slinks) return;
2045
2046 switch (page->type) {
2047 case DPDF:
2048 links = page->u.pdfpage->links;
2049 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
2050 state.pagedims[page->pdimno].ctm);
2051 break;
2052
2053 case DXPS:
2054 links = page->u.xpspage->links;
2055 ctm = state.pagedims[page->pdimno].ctm;
2056 break;
2057
2058 default:
2059 return;
2060 }
2061
2062 for (link = links; link; link = link->next) {
2063 count++;
2064 }
2065 if (count > 0) {
2066 page->slinkcount = count;
2067 page->slinks = calloc (count, slinksize);
2068 if (!page->slinks) {
2069 err (1, "realloc slinks %d", count);
2070 }
2071
2072 for (i = 0, link = links; link; ++i, link = link->next) {
2073 page->slinks[i].link = link;
2074 page->slinks[i].bbox =
2075 fz_round_rect (fz_transform_rect (ctm, link->rect));
2076 }
2077 qsort (page->slinks, count, slinksize, compareslinks);
2078 }
2079 }
2080
2081 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2082 static void fmt_linkn (char *s, unsigned int u)
2083 {
2084 unsigned int len; unsigned int q;
2085 int zma = 'z' - 'a' + 1;
2086 len = 1; q = u;
2087 while (q > zma - 1) { ++len; q /= zma; }
2088 if (s) {
2089 s += len;
2090 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2091 /* handles u == 0 */
2092 }
2093 s[len] = 0;
2094 }
2095
2096 static void highlightslinks (struct page *page, int xoff, int yoff,
2097 int noff, char *targ, int tlen, int hfsize)
2098 {
2099 int i;
2100 char buf[40];
2101 struct slink *slink;
2102 double x0, y0, x1, y1, w;
2103
2104 ensureslinks (page);
2105 glColor3ub (0xc3, 0xb0, 0x91);
2106 for (i = 0; i < page->slinkcount; ++i) {
2107 fmt_linkn (buf, i + noff);
2108 if (!tlen || !strncmp (targ, buf, tlen)) {
2109 slink = &page->slinks[i];
2110
2111 x0 = slink->bbox.x0 + xoff - 5;
2112 y1 = slink->bbox.y0 + yoff - 5;
2113 y0 = y1 + 10 + hfsize;
2114 w = measure_string (state.face, hfsize, buf);
2115 x1 = x0 + w + 10;
2116 glRectd (x0, y0, x1, y1);
2117 }
2118 }
2119
2120 glEnable (GL_BLEND);
2121 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2122 glEnable (GL_TEXTURE_2D);
2123 glColor3ub (0, 0, 0);
2124 for (i = 0; i < page->slinkcount; ++i) {
2125 fmt_linkn (buf, i + noff);
2126 if (!tlen || !strncmp (targ, buf, tlen)) {
2127 slink = &page->slinks[i];
2128
2129 x0 = slink->bbox.x0 + xoff;
2130 y0 = slink->bbox.y0 + yoff + hfsize;
2131 draw_string (state.face, hfsize, x0, y0, buf);
2132 }
2133 }
2134 glDisable (GL_TEXTURE_2D);
2135 glDisable (GL_BLEND);
2136 }
2137
2138
2139 static void uploadslice (struct tile *tile, struct slice *slice)
2140 {
2141 int offset;
2142 struct slice *slice1;
2143 unsigned char *texdata;
2144
2145 offset = 0;
2146 for (slice1 = tile->slices; slice != slice1; slice1++) {
2147 offset += slice1->h * tile->w * tile->pixmap->n;
2148 }
2149 if (slice->texindex != -1 && slice->texindex < state.texcount
2150 && state.texowners[slice->texindex].slice == slice) {
2151 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2152 }
2153 else {
2154 int subimage = 0;
2155 int texindex = state.texindex++ % state.texcount;
2156
2157 if (state.texowners[texindex].w == tile->w) {
2158 if (state.texowners[texindex].h >= slice->h) {
2159 subimage = 1;
2160 }
2161 else {
2162 state.texowners[texindex].h = slice->h;
2163 }
2164 }
2165 else {
2166 state.texowners[texindex].h = slice->h;
2167 }
2168
2169 state.texowners[texindex].w = tile->w;
2170 state.texowners[texindex].slice = slice;
2171 slice->texindex = texindex;
2172
2173 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2174 if (tile->pbo) {
2175 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2176 texdata = 0;
2177 }
2178 else {
2179 texdata = tile->pixmap->samples;
2180 }
2181 if (subimage) {
2182 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2183 0,
2184 0,
2185 0,
2186 tile->w,
2187 slice->h,
2188 state.texform,
2189 state.texty,
2190 texdata+offset
2191 );
2192 }
2193 else {
2194 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2195 0,
2196 state.texiform,
2197 tile->w,
2198 slice->h,
2199 0,
2200 state.texform,
2201 state.texty,
2202 texdata+offset
2203 );
2204 }
2205 if (tile->pbo) {
2206 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2207 }
2208 }
2209 }
2210
2211 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2212 {
2213 CAMLparam2 (args_v, ptr_v);
2214 int dispx = Int_val (Field (args_v, 0));
2215 int dispy = Int_val (Field (args_v, 1));
2216 int dispw = Int_val (Field (args_v, 2));
2217 int disph = Int_val (Field (args_v, 3));
2218 int tilex = Int_val (Field (args_v, 4));
2219 int tiley = Int_val (Field (args_v, 5));
2220 char *s = String_val (ptr_v);
2221 struct tile *tile = parse_pointer ("ml_drawtile", s);
2222
2223 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2224 {
2225 int slicey, firstslice;
2226 struct slice *slice;
2227
2228 firstslice = tiley / tile->sliceheight;
2229 slice = &tile->slices[firstslice];
2230 slicey = tiley % tile->sliceheight;
2231
2232 while (disph > 0) {
2233 int dh;
2234
2235 dh = slice->h - slicey;
2236 dh = MIN (disph, dh);
2237 uploadslice (tile, slice);
2238
2239 glBegin (GL_QUADS);
2240 {
2241 glTexCoord2i (tilex, slicey);
2242 glVertex2i (dispx, dispy);
2243
2244 glTexCoord2i (tilex+dispw, slicey);
2245 glVertex2i (dispx+dispw, dispy);
2246
2247 glTexCoord2i (tilex+dispw, slicey+dh);
2248 glVertex2i (dispx+dispw, dispy+dh);
2249
2250 glTexCoord2i (tilex, slicey+dh);
2251 glVertex2i (dispx, dispy+dh);
2252 }
2253 glEnd ();
2254
2255 dispy += dh;
2256 disph -= dh;
2257 slice++;
2258 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2259 slicey = 0;
2260 }
2261 }
2262 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2263 CAMLreturn (Val_unit);
2264 }
2265
2266 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2267 value xoff_v, value yoff_v,
2268 value li_v)
2269 {
2270 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2271 int xoff = Int_val (xoff_v);
2272 int yoff = Int_val (yoff_v);
2273 int noff = Int_val (Field (li_v, 0));
2274 char *targ = String_val (Field (li_v, 1));
2275 int tlen = caml_string_length (Field (li_v, 1));
2276 int hfsize = Int_val (Field (li_v, 2));
2277 char *s = String_val (ptr_v);
2278 int hlmask = Int_val (hlinks_v);
2279 struct page *page = parse_pointer ("ml_postprocess", s);
2280
2281 if (!page->u.ptr) {
2282 /* deal with loadpage failed pages */
2283 goto done;
2284 }
2285
2286 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2287 if (trylock ("ml_postprocess")) {
2288 noff = 0;
2289 goto done;
2290 }
2291 if (hlmask & 2) {
2292 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2293 noff = page->slinkcount;
2294 }
2295 showsel (page, xoff, yoff);
2296 unlock ("ml_postprocess");
2297
2298 done:
2299 CAMLreturn (Val_int (noff));
2300 }
2301
2302 static fz_link *getlink (struct page *page, int x, int y)
2303 {
2304 fz_point p;
2305 fz_matrix ctm;
2306 fz_link *link, *links;
2307
2308 switch (page->type) {
2309 case DPDF:
2310 ctm = trimctm (page->u.pdfpage, page->pdimno);
2311 links = page->u.pdfpage->links;
2312 break;
2313
2314 case DXPS:
2315 ctm = fz_identity;
2316 links = page->u.xpspage->links;
2317 break;
2318
2319 default:
2320 return NULL;
2321 }
2322 p.x = x;
2323 p.y = y;
2324
2325 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2326 ctm = fz_invert_matrix (ctm);
2327 p = fz_transform_point (ctm, p);
2328
2329 for (link = links; link; link = link->next) {
2330 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2331 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2332 return link;
2333 }
2334 }
2335 }
2336 return NULL;
2337 }
2338
2339 static void ensuretext (struct page *page)
2340 {
2341 if (state.gen != page->tgen) {
2342 droptext (page);
2343 page->tgen = state.gen;
2344 }
2345 if (!page->text) {
2346 fz_device *tdev;
2347
2348 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2349 page->sheet = fz_new_text_sheet (state.ctx);
2350 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2351 fz_run_display_list (page->dlist,
2352 tdev,
2353 pagectm (page),
2354 fz_infinite_bbox, NULL);
2355 qsort (page->text->blocks, page->text->len,
2356 sizeof (*page->text->blocks), compareblocks);
2357 fz_free_device (tdev);
2358 }
2359 }
2360
2361 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2362 {
2363 CAMLparam2 (start_page_v, dir_v);
2364 CAMLlocal1 (ret_v);
2365 int i, dir = Int_val (dir_v);
2366 int start_page = Int_val (start_page_v);
2367 int end_page = dir > 0 ? state.pagecount : -1;
2368
2369 ret_v = Val_int (0);
2370 if (!(state.type == DPDF || state.type == DXPS)) {
2371 goto done;
2372 }
2373
2374 lock ("ml_findpage_with_links");
2375 for (i = start_page + dir; i != end_page; i += dir) {
2376 int found;
2377
2378 switch (state.type) {
2379 case DPDF:
2380 {
2381 pdf_page *page = NULL;
2382
2383 fz_try (state.ctx) {
2384 page = pdf_load_page (state.u.pdf, i);
2385 found = !!page->links;
2386 }
2387 fz_catch (state.ctx) {
2388 found = 0;
2389 }
2390 if (page) {
2391 freepdfpage (page);
2392 }
2393 }
2394 break;
2395 case DXPS:
2396 {
2397 xps_page *page = xps_load_page (state.u.xps, i);
2398 found = !!page->links;
2399 freexpspage (page);
2400 }
2401 break;
2402
2403 default:
2404 ARSERT ("invalid document type");
2405 }
2406
2407 if (found) {
2408 ret_v = caml_alloc_small (1, 1);
2409 Field (ret_v, 0) = Val_int (i);
2410 goto unlock;
2411 }
2412 }
2413 unlock:
2414 unlock ("ml_findpage_with_links");
2415
2416 done:
2417 CAMLreturn (ret_v);
2418 }
2419
2420 enum { dir_first, dir_last};
2421 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2422
2423 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2424 {
2425 CAMLparam2 (ptr_v, dir_v);
2426 CAMLlocal2 (ret_v, pos_v);
2427 struct page *page;
2428 int dirtag, i, slinkindex;
2429 struct slink *found = NULL ,*slink;
2430 char *s = String_val (ptr_v);
2431
2432 page = parse_pointer ("ml_findlink", s);
2433 ret_v = Val_int (0);
2434 if (trylock ("ml_findlink")) {
2435 goto done;
2436 }
2437
2438 ensureslinks (page);
2439
2440 if (Is_block (dir_v)) {
2441 dirtag = Tag_val (dir_v);
2442 switch (dirtag) {
2443 case dir_first_visible:
2444 {
2445 int x0, y0, dir, first_index, last_index;
2446
2447 pos_v = Field (dir_v, 0);
2448 x0 = Int_val (Field (pos_v, 0));
2449 y0 = Int_val (Field (pos_v, 1));
2450 dir = Int_val (Field (pos_v, 2));
2451
2452 if (dir >= 0) {
2453 dir = 1;
2454 first_index = 0;
2455 last_index = page->slinkcount;
2456 }
2457 else {
2458 first_index = page->slinkcount - 1;
2459 last_index = -1;
2460 }
2461
2462 for (i = first_index; i != last_index; i += dir) {
2463 slink = &page->slinks[i];
2464 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2465 found = slink;
2466 break;
2467 }
2468 }
2469 }
2470 break;
2471
2472 case dir_left:
2473 slinkindex = Int_val (Field (dir_v, 0));
2474 found = &page->slinks[slinkindex];
2475 for (i = slinkindex - 1; i >= 0; --i) {
2476 slink = &page->slinks[i];
2477 if (slink->bbox.x0 < found->bbox.x0) {
2478 found = slink;
2479 break;
2480 }
2481 }
2482 break;
2483
2484 case dir_right:
2485 slinkindex = Int_val (Field (dir_v, 0));
2486 found = &page->slinks[slinkindex];
2487 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2488 slink = &page->slinks[i];
2489 if (slink->bbox.x0 > found->bbox.x0) {
2490 found = slink;
2491 break;
2492 }
2493 }
2494 break;
2495
2496 case dir_down:
2497 slinkindex = Int_val (Field (dir_v, 0));
2498 found = &page->slinks[slinkindex];
2499 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2500 slink = &page->slinks[i];
2501 if (slink->bbox.y0 >= found->bbox.y0) {
2502 found = slink;
2503 break;
2504 }
2505 }
2506 break;
2507
2508 case dir_up:
2509 slinkindex = Int_val (Field (dir_v, 0));
2510 found = &page->slinks[slinkindex];
2511 for (i = slinkindex - 1; i >= 0; --i) {
2512 slink = &page->slinks[i];
2513 if (slink->bbox.y0 <= found->bbox.y0) {
2514 found = slink;
2515 break;
2516 }
2517 }
2518 break;
2519 }
2520 }
2521 else {
2522 dirtag = Int_val (dir_v);
2523 switch (dirtag) {
2524 case dir_first:
2525 found = page->slinks;
2526 break;
2527
2528 case dir_last:
2529 if (page->slinks) {
2530 found = page->slinks + (page->slinkcount - 1);
2531 }
2532 break;
2533 }
2534 }
2535 if (found) {
2536 ret_v = caml_alloc_small (2, 1);
2537 Field (ret_v, 0) = Val_int (found - page->slinks);
2538 }
2539
2540 unlock ("ml_findlink");
2541 done:
2542 CAMLreturn (ret_v);
2543 }
2544
2545 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2546
2547 #define LINKTOVAL \
2548 { \
2549 int pageno; \
2550 \
2551 switch (link->dest.kind) { \
2552 case FZ_LINK_GOTO: \
2553 { \
2554 fz_point p; \
2555 \
2556 pageno = link->dest.ld.gotor.page; \
2557 p.x = 0; \
2558 p.y = 0; \
2559 \
2560 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2561 p.y = link->dest.ld.gotor.lt.y; \
2562 p = fz_transform_point (pdim->lctm, p); \
2563 } \
2564 tup_v = caml_alloc_tuple (2); \
2565 ret_v = caml_alloc_small (1, ugoto); \
2566 Field (tup_v, 0) = Val_int (pageno); \
2567 Field (tup_v, 1) = Val_int (p.y); \
2568 Field (ret_v, 0) = tup_v; \
2569 } \
2570 break; \
2571 \
2572 case FZ_LINK_URI: \
2573 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2574 ret_v = caml_alloc_small (1, uuri); \
2575 Field (ret_v, 0) = str_v; \
2576 break; \
2577 \
2578 case FZ_LINK_LAUNCH: \
2579 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2580 ret_v = caml_alloc_small (1, ulaunch); \
2581 Field (ret_v, 0) = str_v; \
2582 break; \
2583 \
2584 case FZ_LINK_NAMED: \
2585 str_v = caml_copy_string (link->dest.ld.named.named); \
2586 ret_v = caml_alloc_small (1, unamed); \
2587 Field (ret_v, 0) = str_v; \
2588 break; \
2589 \
2590 case FZ_LINK_GOTOR: \
2591 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2592 pageno = link->dest.ld.gotor.page; \
2593 tup_v = caml_alloc_tuple (2); \
2594 ret_v = caml_alloc_small (1, uremote); \
2595 Field (tup_v, 0) = str_v; \
2596 Field (tup_v, 1) = Val_int (pageno); \
2597 Field (ret_v, 0) = tup_v; \
2598 break; \
2599 \
2600 default: \
2601 { \
2602 char buf[80]; \
2603 \
2604 snprintf (buf, sizeof (buf), \
2605 "unhandled link kind %d", link->dest.kind); \
2606 str_v = caml_copy_string (buf); \
2607 ret_v = caml_alloc_small (1, uunexpected); \
2608 Field (ret_v, 0) = str_v; \
2609 } \
2610 break; \
2611 } \
2612 }
2613
2614 CAMLprim value ml_getlink (value ptr_v, value n_v)
2615 {
2616 CAMLparam2 (ptr_v, n_v);
2617 CAMLlocal3 (ret_v, tup_v, str_v);
2618 fz_link *link;
2619 struct page *page;
2620 struct pagedim *pdim;
2621 char *s = String_val (ptr_v);
2622
2623 ret_v = Val_int (0);
2624 if (trylock ("ml_getlink")) {
2625 goto done;
2626 }
2627
2628 page = parse_pointer ("ml_getlink", s);
2629 ensureslinks (page);
2630 pdim = &state.pagedims[page->pdimno];
2631 link = page->slinks[Int_val (n_v)].link;
2632 LINKTOVAL;
2633
2634 unlock ("ml_getlink");
2635 done:
2636 CAMLreturn (ret_v);
2637 }
2638
2639 CAMLprim value ml_getlinkcount (value ptr_v)
2640 {
2641 CAMLparam1 (ptr_v);
2642 struct page *page;
2643 char *s = String_val (ptr_v);
2644
2645 page = parse_pointer ("ml_getlinkcount", s);
2646 CAMLreturn (Val_int (page->slinkcount));
2647 }
2648
2649 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2650 {
2651 CAMLparam2 (ptr_v, n_v);
2652 CAMLlocal1 (ret_v);
2653 struct page *page;
2654 struct slink *slink;
2655 char *s = String_val (ptr_v);
2656
2657 page = parse_pointer ("ml_getlinkrect", s);
2658 ret_v = caml_alloc_tuple (4);
2659 if (trylock ("ml_getlinkrect")) {
2660 Field (ret_v, 0) = Val_int (0);
2661 Field (ret_v, 1) = Val_int (0);
2662 Field (ret_v, 2) = Val_int (0);
2663 Field (ret_v, 3) = Val_int (0);
2664 goto done;
2665 }
2666 ensureslinks (page);
2667
2668 slink = &page->slinks[Int_val (n_v)];
2669 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2670 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2671 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2672 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2673 unlock ("ml_getlinkrect");
2674
2675 done:
2676 CAMLreturn (ret_v);
2677 }
2678
2679 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2680 {
2681 CAMLparam3 (ptr_v, x_v, y_v);
2682 CAMLlocal3 (ret_v, tup_v, str_v);
2683 fz_link *link;
2684 struct page *page;
2685 char *s = String_val (ptr_v);
2686 int x = Int_val (x_v), y = Int_val (y_v);
2687 struct pagedim *pdim;
2688
2689 ret_v = Val_int (0);
2690 if (trylock ("ml_whatsunder")) {
2691 goto done;
2692 }
2693
2694 page = parse_pointer ("ml_whatsunder", s);
2695 pdim = &state.pagedims[page->pdimno];
2696 x += pdim->bounds.x0;
2697 y += pdim->bounds.y0;
2698 link = getlink (page, x, y);
2699 if (link) {
2700 LINKTOVAL;
2701 }
2702 else {
2703 fz_rect *b;
2704 fz_text_block *block;
2705
2706 ensuretext (page);
2707 for (block = page->text->blocks;
2708 block < page->text->blocks + page->text->len;
2709 ++block) {
2710 fz_text_line *line;
2711
2712 b = &block->bbox;
2713 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2714 continue;
2715
2716 for (line = block->lines;
2717 line < block->lines + block->len;
2718 ++line) {
2719 fz_text_span *span;
2720
2721 b = &line->bbox;
2722 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2723 continue;
2724
2725 for (span = line->spans;
2726 span < line->spans + line->len;
2727 ++span) {
2728 fz_text_char *ch;
2729
2730 b = &span->bbox;
2731 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2732 continue;
2733
2734 for (ch = span->text; ch < span->text + span->len; ++ch) {
2735 b = &ch->bbox;
2736
2737 if (x >= b->x0 && x <= b->x1
2738 && y >= b->y0 && y <= b->y1) {
2739 const char *n2 =
2740 span->style->font && span->style->font->name
2741 ? span->style->font->name
2742 : "Span has no font name"
2743 ;
2744 FT_FaceRec *face = span->style->font->ft_face;
2745 if (face && face->family_name) {
2746 char *s;
2747 char *n1 = face->family_name;
2748 size_t l1 = strlen (n1);
2749 size_t l2 = strlen (n2);
2750
2751 if (l1 != l2 || memcmp (n1, n2, l1)) {
2752 s = malloc (l1 + l2 + 2);
2753 if (s) {
2754 memcpy (s, n2, l2);
2755 s[l2] = '=';
2756 memcpy (s + l2 + 1, n1, l1 + 1);
2757 str_v = caml_copy_string (s);
2758 free (s);
2759 }
2760 }
2761 }
2762 if (str_v == 0) {
2763 str_v = caml_copy_string (n2);
2764 }
2765 ret_v = caml_alloc_small (1, utext);
2766 Field (ret_v, 0) = str_v;
2767 goto unlock;
2768 }
2769 }
2770 }
2771 }
2772 }
2773 }
2774 unlock:
2775 unlock ("ml_whatsunder");
2776
2777 done:
2778 CAMLreturn (ret_v);
2779 }
2780
2781 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2782 {
2783 CAMLparam2 (ptr_v, rect_v);
2784 fz_rect *b;
2785 struct page *page;
2786 struct pagedim *pdim;
2787 int i, x0, x1, y0, y1;
2788 char *s = String_val (ptr_v);
2789 int fi = 0, li = 0;
2790 fz_text_block *block;
2791 fz_text_span *span, *fspan, *lspan;
2792 fz_text_line *line, *fline = NULL, *lline = NULL;
2793
2794 if (trylock ("ml_seltext")) {
2795 goto done;
2796 }
2797
2798 page = parse_pointer ("ml_seltext", s);
2799 ensuretext (page);
2800
2801 pdim = &state.pagedims[page->pdimno];
2802 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2803 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2804 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2805 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2806
2807 if (0) {
2808 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2809 glColor3ub (128, 128, 128);
2810 glRecti (x0, y0, x1, y1);
2811 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2812 }
2813
2814 fspan = lspan = NULL;
2815
2816 for (block = page->text->blocks;
2817 block < page->text->blocks + page->text->len;
2818 ++block) {
2819 for (line = block->lines;
2820 line < block->lines + block->len;
2821 ++line) {
2822 for (span = line->spans;
2823 span < line->spans + line->len;
2824 ++span) {
2825 for (i = 0; i < span->len; ++i) {
2826 b = &span->text[i].bbox;
2827 int selected = 0;
2828
2829 if (x0 >= b->x0 && x0 <= b->x1
2830 && y0 >= b->y0 && y0 <= b->y1) {
2831 fspan = span;
2832 fline = line;
2833 fi = i;
2834 selected = 1;
2835 }
2836 if (x1 >= b->x0 && x1 <= b->x1
2837 && y1 >= b->y0 && y1 <= b->y1) {
2838 lspan = span;
2839 lline = line;
2840 li = i;
2841 selected = 1;
2842 }
2843 if (0 && selected) {
2844 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2845 glColor3ub (128, 128, 128);
2846 glRecti (b->x0, b->y0, b->x1, b->y1);
2847 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2848 }
2849 }
2850 }
2851 }
2852 }
2853 if (y1 < y0 || x1 < x0) {
2854 int swap = 0;
2855
2856 if (fspan == lspan) {
2857 swap = 1;
2858 }
2859 else {
2860 if (y1 < y0) {
2861 if (fline != lline) {
2862 swap = 1;
2863 }
2864 }
2865 }
2866
2867 if (swap) {
2868 i = fi;
2869 span = fspan;
2870
2871 fi = li;
2872 fspan = lspan;
2873
2874 li = i;
2875 lspan = span;
2876 }
2877 }
2878
2879 page->fmark.i = fi;
2880 page->fmark.span = fspan;
2881
2882 page->lmark.i = li;
2883 page->lmark.span = lspan;
2884
2885 unlock ("ml_seltext");
2886
2887 done:
2888 CAMLreturn (Val_unit);
2889 }
2890
2891 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2892 {
2893 char buf[4];
2894 int i, len, ret;
2895
2896 for (i = a; i <= b; ++i) {
2897 len = fz_runetochar (buf, span->text[i].c);
2898 ret = fwrite (buf, len, 1, f);
2899
2900 if (ret != 1) {
2901 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2902 len, ret, strerror (errno));
2903 return -1;
2904 }
2905 }
2906 return 0;
2907 }
2908
2909 #ifdef __CYGWIN__
2910 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2911 {
2912 caml_failwith ("ml_popen not implemented under Cygwin");
2913 }
2914 #else
2915 CAMLprim value ml_popen (value command_v, value fds_v)
2916 {
2917 CAMLparam2 (command_v, fds_v);
2918 CAMLlocal2 (l_v, tup_v);
2919 int ret;
2920 char *msg = NULL;
2921 value earg_v = Nothing;
2922 posix_spawnattr_t attr;
2923 posix_spawn_file_actions_t fa;
2924 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2925
2926 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2927 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2928 }
2929
2930 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2931 msg = "posix_spawnattr_init";
2932 goto fail1;
2933 }
2934
2935 #ifdef POSIX_SPAWN_USEVFORK
2936 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2937 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2938 goto fail;
2939 }
2940 #endif
2941
2942 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2943 int fd1, fd2;
2944
2945 tup_v = Field (l_v, 0);
2946 fd1 = Int_val (Field (tup_v, 0));
2947 fd2 = Int_val (Field (tup_v, 1));
2948 if (fd2 < 0) {
2949 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2950 msg = "posix_spawn_file_actions_addclose";
2951 earg_v = tup_v;
2952 goto fail;
2953 }
2954 }
2955 else {
2956 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
2957 msg = "posix_spawn_file_actions_adddup2";
2958 earg_v = tup_v;
2959 goto fail;
2960 }
2961 }
2962 }
2963
2964 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
2965 msg = "posix_spawn";
2966 goto fail;
2967 }
2968
2969 fail:
2970 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
2971 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
2972 }
2973
2974 fail1:
2975 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
2976 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
2977 strerror (ret));
2978 }
2979
2980 if (msg)
2981 unix_error (ret, msg, earg_v);
2982
2983 CAMLreturn (Val_unit);
2984 }
2985 #endif
2986
2987 CAMLprim value ml_copysel (value fd_v, value ptr_v)
2988 {
2989 CAMLparam1 (ptr_v);
2990 FILE *f;
2991 int seen = 0;
2992 struct page *page;
2993 fz_text_line *line;
2994 fz_text_span *span;
2995 fz_text_block *block;
2996 int fd = Int_val (fd_v);
2997 char *s = String_val (ptr_v);
2998
2999 if (trylock ("ml_copysel")) {
3000 goto done;
3001 }
3002
3003 page = parse_pointer ("ml_sopysel", s);
3004
3005 if (!page->fmark.span || !page->lmark.span) {
3006 fprintf (stderr, "nothing to copy\n");
3007 goto unlock;
3008 }
3009
3010 f = fdopen (fd, "w");
3011 if (!f) {
3012 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3013 strerror (errno));
3014 f = stdout;
3015 }
3016
3017 for (block = page->text->blocks;
3018 block < page->text->blocks + page->text->len;
3019 ++block) {
3020 for (line = block->lines;
3021 line < block->lines + block->len;
3022 ++line) {
3023 for (span = line->spans;
3024 span < line->spans + line->len;
3025 ++span) {
3026 int a, b;
3027
3028 seen |= span == page->fmark.span || span == page->lmark.span;
3029 a = span == page->fmark.span ? page->fmark.i : 0;
3030 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3031
3032 if (seen) {
3033 if (pipespan (f, span, a, b)) {
3034 goto close;
3035 }
3036 if (span == line->spans + line->len - 1) {
3037 if (putc ('\n', f) == EOF) {
3038 fprintf (stderr,
3039 "failed break line on sel pipe: %s\n",
3040 strerror (errno));
3041 goto close;
3042 }
3043 }
3044 if (span == page->lmark.span) {
3045 goto endloop;
3046 }
3047 }
3048 }
3049 }
3050 }
3051 endloop:
3052 page->lmark.span = NULL;
3053 page->fmark.span = NULL;
3054
3055 close:
3056 if (f != stdout) {
3057 int ret = fclose (f);
3058 fd = -1;
3059 if (ret == -1) {
3060 if (errno != ECHILD) {
3061 fprintf (stderr, "failed to close sel pipe: %s\n",
3062 strerror (errno));
3063 }
3064 }
3065 }
3066 unlock:
3067 unlock ("ml_copysel");
3068
3069 done:
3070 if (fd >= 0) {
3071 if (close (fd)) {
3072 fprintf (stderr, "failed to close sel pipe: %s\n",
3073 strerror (errno));
3074 }
3075 }
3076 CAMLreturn (Val_unit);
3077 }
3078
3079 CAMLprim value ml_getpdimrect (value pagedimno_v)
3080 {
3081 CAMLparam1 (pagedimno_v);
3082 CAMLlocal1 (ret_v);
3083 int pagedimno = Int_val (pagedimno_v);
3084 fz_rect box;
3085
3086 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3087 if (trylock ("ml_getpdimrect")) {
3088 box = fz_empty_rect;
3089 }
3090 else {
3091 box = state.pagedims[pagedimno].mediabox;
3092 unlock ("ml_getpdimrect");
3093 }
3094
3095 Store_double_field (ret_v, 0, box.x0);
3096 Store_double_field (ret_v, 1, box.x1);
3097 Store_double_field (ret_v, 2, box.y0);
3098 Store_double_field (ret_v, 3, box.y1);
3099
3100 CAMLreturn (ret_v);
3101 }
3102
3103 static double getmaxw (void)
3104 {
3105 int i;
3106 struct pagedim *p;
3107 double maxw = 0.0;
3108
3109 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3110 double x0, x1, w;
3111
3112 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3113 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3114
3115 w = x1 - x0;
3116 maxw = MAX (w, maxw);
3117 }
3118 return maxw;
3119 }
3120
3121 CAMLprim value ml_getmaxw (value unit_v)
3122 {
3123 CAMLparam1 (unit_v);
3124 CAMLlocal1 (ret_v);
3125 double maxw = 0.0;
3126
3127 if (trylock ("ml_getmaxw")) {
3128 goto done;
3129 }
3130 maxw = getmaxw ();
3131 unlock ("ml_getmaxw");
3132 done:
3133 ret_v = caml_copy_double (maxw);
3134 CAMLreturn (ret_v);
3135 }
3136
3137 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3138 value dw_v, value cols_v)
3139 {
3140 CAMLparam3 (winw_v, winh_v, dw_v);
3141 CAMLlocal1 (ret_v);
3142 int i;
3143 double zoom = 1.0;
3144 double maxw = 0.0, maxh = 0.0;
3145 struct pagedim *p;
3146 double winw = Int_val (winw_v);
3147 double winh = Int_val (winh_v);
3148 double dw = Int_val (dw_v);
3149 double cols = Int_val (cols_v);
3150 double pw = 1.0, ph = 1.0, aspect;
3151
3152 if (trylock ("ml_zoom_for_height")) {
3153 goto done;
3154 }
3155
3156 if (state.proportional) {
3157 maxw = getmaxw () / cols;
3158 }
3159
3160 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3161 double x0, x1, y0, y1, w, h, scaledh, scale;
3162 fz_rect rect;
3163
3164 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3165 p->mediabox);
3166 x0 = MIN (rect.x0, rect.x1);
3167 x1 = MAX (rect.x0, rect.x1);
3168 y0 = MIN (rect.y0, rect.y1);
3169 y1 = MAX (rect.y0, rect.y1);
3170
3171 w = (x1 - x0) / cols;
3172 h = y1 - y0;
3173
3174 if (state.proportional) {
3175 scale = w / maxw;
3176 scaledh = h * scale;
3177 }
3178 else {
3179 scale = 1.0;
3180 scaledh = h;
3181 }
3182
3183 if (scaledh > maxh) {
3184 maxh = scaledh;
3185 ph = scaledh;
3186 pw = w * scale;
3187 }
3188 }
3189
3190 aspect = pw / ph;
3191 zoom = (winh * aspect + dw) / winw;
3192
3193 unlock ("ml_zoom_for_height");
3194 done:
3195 ret_v = caml_copy_double (zoom);
3196 CAMLreturn (ret_v);
3197 }
3198
3199 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3200 {
3201 CAMLparam4 (pt_v, x_v, y_v, string_v);
3202 CAMLlocal1 (ret_v);
3203 int pt = Int_val(pt_v);
3204 int x = Int_val (x_v);
3205 int y = Int_val (y_v);
3206 double w;
3207
3208 w = draw_string (state.face, pt, x, y, String_val (string_v));
3209 ret_v = caml_copy_double (w);
3210 CAMLreturn (ret_v);
3211 }
3212
3213 CAMLprim value ml_measure_string (value pt_v, value string_v)
3214 {
3215 CAMLparam2 (pt_v, string_v);
3216 CAMLlocal1 (ret_v);
3217 int pt = Int_val (pt_v);
3218 double w;
3219
3220 w = measure_string (state.face, pt, String_val (string_v));
3221 ret_v = caml_copy_double (w);
3222 CAMLreturn (ret_v);
3223 }
3224
3225 CAMLprim value ml_getpagebox (value opaque_v)
3226 {
3227 CAMLparam1 (opaque_v);
3228 CAMLlocal1 (ret_v);
3229 fz_bbox bbox;
3230 fz_device *dev;
3231 char *s = String_val (opaque_v);
3232 struct page *page = parse_pointer ("ml_getpagebox", s);
3233
3234 ret_v = caml_alloc_tuple (4);
3235 dev = fz_new_bbox_device (state.ctx, &bbox);
3236 dev->hints |= FZ_IGNORE_SHADE;
3237
3238 switch (page->type) {
3239 case DPDF:
3240 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3241 break;
3242
3243 case DXPS:
3244 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3245 break;
3246
3247 default:
3248 bbox = fz_infinite_bbox;
3249 break;
3250 }
3251
3252 fz_free_device (dev);
3253 Field (ret_v, 0) = Val_int (bbox.x0);
3254 Field (ret_v, 1) = Val_int (bbox.y0);
3255 Field (ret_v, 2) = Val_int (bbox.x1);
3256 Field (ret_v, 3) = Val_int (bbox.y1);
3257
3258 CAMLreturn (ret_v);
3259 }
3260
3261 CAMLprim value ml_setaalevel (value level_v)
3262 {
3263 CAMLparam1 (level_v);
3264
3265 state.aalevel = Int_val (level_v);
3266 CAMLreturn (Val_unit);
3267 }
3268
3269 #undef pixel
3270 #include <X11/Xlib.h>
3271 #include <GL/glx.h>
3272
3273 static struct {
3274 Display *dpy;
3275 GLXContext ctx;
3276 GLXDrawable drawable;
3277 } glx;
3278
3279 #include "keysym2ucs.c"
3280
3281 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3282 {
3283 CAMLparam1 (keysym_v);
3284 CAMLlocal1 (str_v);
3285 KeySym keysym = Int_val (keysym_v);
3286 Rune rune;
3287 int len;
3288 char buf[5];
3289
3290 rune = keysym2ucs (keysym);
3291 len = fz_runetochar (buf, rune);
3292 buf[len] = 0;
3293 str_v = caml_copy_string (buf);
3294 CAMLreturn (str_v);
3295 }
3296
3297 CAMLprim value ml_glx (value win_v)
3298 {
3299 CAMLparam1 (win_v);
3300 XVisualInfo *visual;
3301 int screen, wid = Int_val (win_v);
3302 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3303
3304 glx.dpy = XOpenDisplay (NULL);
3305 if (!glx.dpy) {
3306 caml_failwith ("XOpenDisplay");
3307 }
3308
3309 screen = DefaultScreen (glx.dpy);
3310 visual = glXChooseVisual (glx.dpy, screen, attributes);
3311 if (!visual) {
3312 XCloseDisplay (glx.dpy);
3313 glx.dpy = NULL;
3314 caml_failwith ("glXChooseVisual");
3315 }
3316
3317 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3318 XFree (visual);
3319 if (!glx.ctx) {
3320 XCloseDisplay (glx.dpy);
3321 glx.dpy = NULL;
3322 caml_failwith ("glXCreateContext");
3323 }
3324
3325 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3326 glXDestroyContext (glx.dpy, glx.ctx);
3327 XCloseDisplay (glx.dpy);
3328 glx.dpy = NULL;
3329 glx.ctx = NULL;
3330 caml_failwith ("glXMakeCurrent");
3331 }
3332 glx.drawable = wid;
3333 CAMLreturn (Val_unit);
3334 }
3335
3336 CAMLprim value ml_swapb (value unit_v)
3337 {
3338 CAMLparam1 (unit_v);
3339 glXSwapBuffers (glx.dpy, glx.drawable);
3340 CAMLreturn (Val_unit);
3341 }
3342
3343 CAMLprim value ml_glxsync (value unit_v)
3344 {
3345 CAMLparam1 (unit_v);
3346 if (glx.dpy && glx.ctx) {
3347 glXWaitX ();
3348 glXWaitGL ();
3349 }
3350 CAMLreturn (Val_unit);
3351 }
3352
3353 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3354 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3355
3356 CAMLprim value ml_platform (value unit_v)
3357 {
3358 CAMLparam1 (unit_v);
3359 int platid = piunknown;
3360
3361 #if defined __linux__
3362 platid = pilinux;
3363 #elif defined __CYGWIN__
3364 platid = picygwin;
3365 #elif defined __DragonFly__
3366 platid = pidragonflybsd;
3367 #elif defined __FreeBSD__
3368 platid = pifreebsd;
3369 #elif defined __OpenBSD__
3370 platid = piopenbsd;
3371 #elif defined __NetBSD__
3372 platid = pinetbsd;
3373 #elif defined __sun__
3374 platid = pisun;
3375 #elif defined __APPLE__
3376 platid = piosx;
3377 #endif
3378 CAMLreturn (Val_int (platid));
3379 }
3380
3381 CAMLprim value ml_cloexec (value fd_v)
3382 {
3383 CAMLparam1 (fd_v);
3384 int fd = Int_val (fd_v);
3385
3386 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3387 uerror ("fcntl", Nothing);
3388 }
3389 CAMLreturn (Val_unit);
3390 }
3391
3392 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3393 {
3394 CAMLparam2 (w_v, h_v);
3395 CAMLlocal1 (ret_v);
3396 struct pbo *pbo;
3397 int w = Int_val (w_v);
3398 int h = Int_val (h_v);
3399 int cs = Int_val (cs_v);
3400
3401 if (state.pbo_usable) {
3402 pbo = calloc (sizeof (*pbo), 1);
3403 if (!pbo) {
3404 err (1, "calloc pbo");
3405 }
3406
3407 switch (cs) {
3408 case 0:
3409 case 1:
3410 pbo->size = w*h*4;
3411 break;
3412 case 2:
3413 pbo->size = w*h*2;
3414 break;
3415 default:
3416 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3417 }
3418
3419 state.glGenBuffersARB (1, &pbo->id);
3420 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3421 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3422 NULL, GL_STREAM_DRAW);
3423 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3424 GL_READ_WRITE);
3425 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3426 if (!pbo->ptr) {
3427 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3428 state.glDeleteBuffersARB (1, &pbo->id);
3429 free (pbo);
3430 ret_v = caml_copy_string ("0");
3431 }
3432 else {
3433 int res;
3434 char *s;
3435
3436 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3437 if (res < 0) {
3438 err (1, "snprintf %" FMT_ptr " failed", pbo);
3439 }
3440 s = malloc (res+1);
3441 if (!s) {
3442 err (1, "malloc %d bytes failed", res+1);
3443 }
3444 res = sprintf (s, "%" FMT_ptr, pbo);
3445 if (res < 0) {
3446 err (1, "sprintf %" FMT_ptr " failed", pbo);
3447 }
3448 ret_v = caml_copy_string (s);
3449 free (s);
3450 }
3451 }
3452 else {
3453 ret_v = caml_copy_string ("0");
3454 }
3455 CAMLreturn (ret_v);
3456 }
3457
3458 CAMLprim value ml_freepbo (value s_v)
3459 {
3460 CAMLparam1 (s_v);
3461 char *s = String_val (s_v);
3462 struct tile *tile = parse_pointer ("ml_freepbo", s);
3463
3464 if (tile->pbo) {
3465 state.glDeleteBuffersARB (1, &tile->pbo->id);
3466 tile->pbo->id = -1;
3467 tile->pbo->ptr = NULL;
3468 tile->pbo->size = -1;
3469 }
3470 CAMLreturn (Val_unit);
3471 }
3472
3473 CAMLprim value ml_unmappbo (value s_v)
3474 {
3475 CAMLparam1 (s_v);
3476 char *s = String_val (s_v);
3477 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3478
3479 if (tile->pbo) {
3480 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3481 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3482 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3483 }
3484 tile->pbo->ptr = NULL;
3485 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3486 }
3487 CAMLreturn (Val_unit);
3488 }
3489
3490 static void setuppbo (void)
3491 {
3492 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3493 GGPA (glBindBufferARB);
3494 if (state.glBindBufferARB) {
3495 GGPA (glUnmapBufferARB);
3496 if (state.glUnmapBufferARB) {
3497 GGPA (glMapBufferARB);
3498 if (state.glMapBufferARB) {
3499 GGPA (glBufferDataARB);
3500 if (state.glBufferDataARB) {
3501 GGPA (glGenBuffersARB);
3502 if (state.glGenBuffersARB) {
3503 GGPA (glDeleteBuffersARB);
3504 if (state.glDeleteBuffersARB) {
3505 state.pbo_usable = 1;
3506 }
3507 }
3508 }
3509 }
3510 }
3511 }
3512 #undef GGPA
3513 }
3514
3515 CAMLprim value ml_pbo_usable (value unit_v)
3516 {
3517 CAMLparam1 (unit_v);
3518 CAMLreturn (Val_bool (state.pbo_usable));
3519 }
3520
3521 CAMLprim value ml_init (value pipe_v, value params_v)
3522 {
3523 CAMLparam2 (pipe_v, params_v);
3524 CAMLlocal2 (trim_v, fuzz_v);
3525 int ret;
3526 int texcount;
3527 char *fontpath;
3528 int colorspace;
3529 int mustoresize;
3530 int haspboext;
3531 struct sigaction sa;
3532
3533 state.cr = Int_val (Field (pipe_v, 0));
3534 state.cw = Int_val (Field (pipe_v, 1));
3535 state.rotate = Int_val (Field (params_v, 0));
3536 state.proportional = Bool_val (Field (params_v, 1));
3537 trim_v = Field (params_v, 2);
3538 texcount = Int_val (Field (params_v, 3));
3539 state.sliceheight = Int_val (Field (params_v, 4));
3540 mustoresize = Int_val (Field (params_v, 5));
3541 colorspace = Int_val (Field (params_v, 6));
3542 fontpath = String_val (Field (params_v, 7));
3543 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3544 if (!state.trimcachepath) {
3545 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3546 strerror (errno));
3547 }
3548 haspboext = Bool_val (Field (params_v, 9));
3549
3550 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3551
3552 state.trimmargins = Bool_val (Field (trim_v, 0));
3553 fuzz_v = Field (trim_v, 1);
3554 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3555 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3556 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3557 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3558
3559 set_tex_params (colorspace);
3560
3561 if (*fontpath) {
3562 state.face = load_font (fontpath);
3563 }
3564 else {
3565 unsigned int len;
3566 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3567
3568 state.face = load_builtin_font (base, len);
3569 }
3570 if (!state.face) _exit (1);
3571
3572 realloctexts (texcount);
3573
3574 if (haspboext) {
3575 setuppbo ();
3576 }
3577
3578 #ifdef __CYGWIN__
3579 sa.sa_handler = SIG_IGN;
3580 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3581 #else
3582 sa.sa_handler = SIG_DFL;
3583 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3584 #endif
3585 if (sigemptyset (&sa.sa_mask)) {
3586 err (1, "sigemptyset");
3587 }
3588 if (sigaction (SIGCHLD, &sa, NULL)) {
3589 err (1, "sigaction");
3590 }
3591
3592 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3593 if (ret) {
3594 errx (1, "pthread_create: %s", strerror (ret));
3595 }
3596
3597 CAMLreturn (Val_unit);
3598 }
PDF pager